EntityQ1502887· pop 37· linked from 255 articlesgeodetic reference systemSign in to savereference frame used in geodesy, surveying, cartography and navigationConnectionsInternational Terrestrial Reference SystemEntityGlobal Positioning SystemEntityECEFEntityGeodetic coordinatesEntitygeographic coordinate conversionEntityframe of referenceEntityBeiDouEntityreference ellipsoidEntityWorld Geodetic SystemEntityEuropean Terrestrial Reference System 1989EntityOrdnance Survey National GridEntityspatial reference systemEntityNorth American DatumEntityplanetary coordinate systemEntityEarthConceptIsaac NewtonPersonNorth AmericaEntityMarsEntityoceanEntitygeographic coordinate systemEntityCategoriesGeodetic datums